211212211220122 has 16 divisors (see below), whose sum is σ = 362137114202112. Its totient is φ = 90504759638160.

The previous prime is 211212211220107. The next prime is 211212211220173. The reversal of 211212211220122 is 221022112212112.

It is a super-2 number, since 2×211212211220122² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211212211220093 and 211212211220102.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1229865754 + ... + 1230037477.

It is an arithmetic number, because the mean of its divisors is an integer number (22633569637632).

Almost surely, 2^{211212211220122} is an apocalyptic number.

211212211220122 is a deficient number, since it is larger than the sum of its proper divisors (150924902981990).

211212211220122 is a wasteful number, since it uses less digits than its factorization.

211212211220122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2459909373.

The product of its (nonzero) digits is 256, while the sum is 22.

Adding to 211212211220122 its reverse (221022112212112), we get a palindrome (432234323432234).

The spelling of 211212211220122 in words is "two hundred eleven trillion, two hundred twelve billion, two hundred eleven million, two hundred twenty thousand, one hundred twenty-two".